Social networking is a method to link communities of people together in some fashion, usually by software. The software, though varies from network to network usually gives users the ability to share and upload photos, videos and bookmarks, blog, message friends, link with or make new friends.
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From the website: "The gibLink Network's mission is to build a global community of entrepreneurs, small business owners and home-based business owners to advertise and promote their businesses, share ideas and strategies to benefit together from the growth and revenue generated by the entire community by sharing it back to the advertisers."